css

1.htmlBasic Knowledge HTML is not a programming language, but a markup language used to tell the browser how to organize a page. 1. Element The start tag + content + end tag is a complete element. But empty elements only have start tags. For example: the element is used to insert a specified picture at the location of the element . 2. Nested elements Elements can be placed within other elements – this is called nesting set. For example: I love my Motherland The tag is used here to emphasize the content of the motherland. 3. Introduction to common elements (1.) Title to (2.) Paragraph (3.) List List with serial number: List without serial number: (4.) Hyperlink (5.) Image (6.) Block-level semantic element None Semantic elements are usually used to organize content so that it can be laid out or manipulated through CSS or JS later. (7.) Inline semantic-less elements 4. Document structure 5.htmlComments 2.css basic knowledge Full name: CascadingStyleSheets->Cascading Style Sheets Definition: CSS becomes a cascading style sheet, which is mainly used to set the text content (font, size, alignment, etc.), the shape of the image (width and height, border style, margins, etc.) in the HTML page, and The…

1.htmlBasic Knowledge HTML is not a programming language, but a markup language used to tell the browser how to organize a page. 1. Element The start tag + content + end tag is a complete element. But empty elements only have start tags. For example: the element is used to insert a specified picture at the location of the element . 2. Nested elements Elements can be placed within other elements – this is called nesting set. For example: I love my Motherland The tag is used here to emphasize the content of the motherland. 3. Introduction to common elements (1.) Title to (2.) Paragraph (3.) List List with serial number: List without serial number: (4.) Hyperlink (5.) Image (6.) Block-level semantic element None Semantic elements are usually used to organize content so that it can be laid out or manipulated through CSS or JS later. (7.) Inline semantic-less elements 4. Document structure 5.htmlComments 2.cssbasicknowledge Fullname:CascadingStyleSheets->CascadingStyleSheets Definition:CSSbecomesacascadingstylesheet,whichismainlyusedtosetthetextcontent(font,size,alignment,etc.),theshapeoftheimage(widthandheight,borderstyle,margins,etc.)intheHTMLpage,andThelayoutofthelayoutandotherappearancedisplaystyles.CSSisbasedonHTMLandprovidesawealthoffunctions(suchasfont,color,backgroundcontrol,overalllayout,etc.),andcanalsosetdifferentstylesfordifferentbrowsers. TherelationshipbetweenHTML,CSSandJS HTMLisamarkuplanguagethatisusedtostructurethecontentofourwebpagesandgivethecontentmeaning.Forexample,defineparagraphs,headings,anddatatables,orembedimagesandvideosintopages. CSSisastyleruleslanguagethatcanbeusedtoapplystylestoHTMLcontent,suchassettingbackgroundcolorsandfonts,andlayingoutcontentinmultiplecolumns. Javascriptisascriptinglanguagethatcanbeusedtocreatedynamicallyupdatingcontent,controlmultimedia,animateimages,andmuchmore. 3.BasicknowledgeofJavascript WhatisJavascriptcisascript,aprogramminglanguage,whichcanComplexfunctionsareimplementedonwebpages.Whatwebpagesshowyouisnolongersimplestaticinformation,butreal-timecontentupdates,interactivemaps,2D/3Danimations,scrollingvideos,etc.HowtoaddJavascripttoapageJavascriptcanbeaddedtoanHTMLpagejustlikeCSS.CSSusestheelementtolinktoexternalstylesheets,andtheelementtoembedinternalstylesheetsintoHTML.Javascriptonlyneedsoneelementhere-.Javascriptrunsequence AfterthecollectionofHTMLandCSSisassembledintoawebpage,thebrowser’sJavascriptengineexecutestheJavascriptcode.ThisensuresthatthestructureandstylingofthewebpagearealreadyinplacebeforetheJavascriptstartsrunning. WhenthebrowserexecutesapieceofJavascriptcode,itusuallyexecutesthecodefromtoptobottom.Thismeansyouneedtopayattentiontotheorderinwhichyourcodeiswritten. 4.KnowledgerelatedtoHTTPprotocol HTTPprotocol(HyperTextTransferProtocol),whichisbasedontheapplicationlayerofTCPprotocolThetransmissionprotocolissimplyarulefordatatransmissionbetweentheclientandtheserver.url http协议格式 5.Requestformat 6. Response format The format of the HTTP response is except for the status line (first line) and Except for the different request lines, the format is the same 7.Commonrequestmethodsandmeanings 8.…